Standard/regional:

zubat -> golbat -> crobat: gossifleur (regional) -> eldegoss (regional): lotad (regional) -> lombre (regional) -> ludicolo (regional): whismur -> loudred -> exploud: jangmo_o (regional) -> hakamo_o (regional) -> kommo_o (regional): fuecoco -> crocalor -> skeledirge: grookey -> thwackey -> rillaboom:

Add picks:

Uncommon: woobat -> swoobat: minccino -> cinccino: noibat -> noivern:

Rare: kricketot -> kricketune: clauncher -> clawitzer:

Epic: wailmer -> wailord: swablu -> altaria:

Hatches: tympole: popplio:

Uniques:

lapras:

chingling -> chimecho:

chatot:

audino:

maractus:

scream_tail:

Legendaries:

jirachi:

meloetta:

pirouette_meloetta:

fezandipiti: